Why Choose the Pizzato FD 20R2-L20F8M2 Safety Switch with Manual Mechanical Delay?
The Pizzato FD 20R2-L20F8M2 is a robust safety switch with manual mechanical delay and separate actuator designed for controlled access to hazardous areas of industrial machinery. Part of the Pizzato FD Series, it combines guard-position monitoring with mechanical locking and a deliberate manual release sequence.
This configuration features a 20-second manual mechanical delay operated by a long knob. The delay mechanism requires deliberate manual operation before the actuator can be released, making the switch particularly suitable for machinery where hazardous movement may continue for a period after a stop command.
The FD 20R2-L20F8M2 incorporates a 1NO + 2NC slow-action contact block, positive-opening safety contacts, a rugged metal housing and IP67 protection. The F8 configuration is designed for use with the corresponding VF KEYF8 actuator, while the M2 version provides an M20 × 1.5 threaded cable entry for industrial field wiring.
Key Advantages
- 20-second manual mechanical delay supports controlled access after a machine stop command.
- 1NO + 2NC slow-action contacts provide safety and signalling functions.
- Positive-opening safety contacts provide direct mechanical opening of the safety circuit.
- Separate VF KEYF8 actuator provides mechanical guard-position monitoring.
- Heavy-duty metal FD-Series housing for industrial machinery.
- IP67 protection supports installation in demanding environments.
- M20 × 1.5 threaded cable entry provides straightforward field wiring.
Key Features
- Pizzato FD Series safety switch.
- Safety switch with manual mechanical delay, locking and separate actuator.
- Long-knob 20-second delay mechanism.
- 1NO + 2NC contact configuration.
- Slow-action contact block.
- Positive-opening safety contact operation.
- VF KEYF8 separate actuator configuration.
- Durable metal housing.
- IP67 degree of protection.
- M20 × 1.5 threaded conduit entry.
Reliable 20-Second Mechanical Delay for Controlled Guard Access
The manual mechanical delay provides a controlled sequence between initiating guard release and obtaining access to the protected machine area. On the FD 20R2-L20F8M2, the long-knob mechanism provides a 20-second delay, making the switch particularly useful where machinery has hazardous movement that cannot stop instantaneously.
Combined with separate-actuator guard monitoring, positive-opening safety contacts and mechanical locking, this arrangement provides a robust solution without requiring an electrically operated locking solenoid. The metal FD enclosure and IP67 protection further support reliable operation on demanding industrial machinery.
Typical Applications
- Machine guards requiring delayed access.
- Machinery with hazardous run-down times.
- Machine tools and rotating equipment.
- Automated manufacturing and assembly cells.
- Packaging and processing machinery.
- Conveyor and material handling systems.
- Industrial production equipment with guarded hazardous areas.
